Tony Lindgren 18e27df4f2 serial: 8250: Fix oops for port->pm on uart_change_pm() ...

[ Upstream commit dfe2aeb226 ]

Unloading a hardware specific 8250 driver can produce error "Unable to
handle kernel paging request at virtual address" about ten seconds after
unloading the driver. This happens on uart_hangup() calling
uart_change_pm().

Turns out commit 04e82793f0 ("serial: 8250: Reinit port->pm on port
specific driver unbind") was only a partial fix. If the hardware specific
driver has initialized port->pm function, we need to clear port->pm too.
Just reinitializing port->ops does not do this. Otherwise serial8250_pm()
will call port->pm() instead of serial8250_do_pm().

Fixes: 04e82793f0 ("serial: 8250: Reinit port->pm on port specific driver unbind")
Signed-off-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20230804131553.52927-1-tony@atomide.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2023-08-26 14:23:36 +02:00

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hvc

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ipwireless

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serdev

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serial

serial: 8250: Fix oops for port->pm on uart_change_pm()

2023-08-26 14:23:36 +02:00

vt

vc_screen: reload load of struct vc_data pointer in vcs_write() to avoid UAF

2023-05-24 17:36:54 +01:00

amiserial.c

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ehv_bytechan.c

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goldfish.c

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Kconfig

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Makefile

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mips_ejtag_fdc.c

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moxa.c

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moxa.h

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mxser.c

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n_gsm.c

tty: n_gsm: fix the UAF caused by race condition in gsm_cleanup_mux

2023-08-26 14:23:31 +02:00

n_hdlc.c

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n_null.c

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n_tty.c

tty: fix hang on tty device with no_room set

2023-08-03 10:22:29 +02:00

nozomi.c

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pty.c

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synclink_gt.c

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sysrq.c

workqueue: Introduce show_one_worker_pool and show_one_workqueue.

2023-05-11 23:00:35 +09:00

tty_audit.c

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tty_baudrate.c

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tty_buffer.c

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tty_io.c

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tty_ioctl.c

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tty_jobctrl.c

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tty_ldisc.c

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tty_ldsem.c

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tty_mutex.c

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tty_port.c

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tty.h

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ttynull.c

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vcc.c

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